Brake for cycles.



N0- 804,216. PATENTED NOV. 14, 1905. W. H. COCKS.

BRAKE FOR CYCLES- APPLICATION FILED NOV. 7, 1904.

2 SHEETS-SHEET 1.

WlTNESSES'. lNVENTOR.

PATENTED NOV. 14, 1905.

W. H. COCKS.

BRAKE FOR CYCLES.

APPLIOATION FILED NOV. 7.1904.

2 SHEETS-SHEET Z.

INVENTOR.

WITNESSES:

. .UNITED STATES PATENT OFFICE.

, WALTER H. COCKS, OF EALING, ENGLAND.

BRAKE FOR CYCLES.

To all whom, it may concern.-

Be it known that I, WALTER HENRY COCKS, a subject of the King of GreatBritain and Ireland, and a resident of 38 Ranelagh road, Ealing, in thecounty of Middlesex, England, have invented a certain new and usefulimprovement in Brakes for Mechanically-Propelled Cycles, (for which Ihave obtained Letters Patent in Great Britain, No. 24,475, datedNovember 11, 1903,) of which the following is a specification.

This invention relates'to an improved brake particularly adapted formechanically-propelled bicycles and other velocipedes.

1n the accompanying drawings, which illustrate this invention, Figure 1is a view in side elevation. Fig. 2 is a part view in front elevation.Fig. 8 is a view in plan. Fig. lisa view in perspective showing theapplication of the brake to a cycle.

Throughout the views similar parts are marked with like letters ofreference.

The brake consists essentially of an L-shaped lever A, pivoted to abracket B, adapted to be clamped to one of the members Xof the lowerback fork of a cycle, of a brake-block 0, carried by one end of thelever A, and of a trip device D, mounted on the other end of the lever Aand by which the lever A is operated through the 'back action of one ofthe pedalcranks Y.

The arms a of the lever A is shaped to receive a shoe (0', on which ismounted a block 0 of. leather, rubber, or other suitable material, thesaid block being shaped to adapt it to fit in the groove of the pulley Zon the driving-wheel of the cycle, by which motion is imparted to saidwheel by means of a driving-band of leather or other suitable material.The shoe (0' is preferably attached to the arm a of the lever A, so thatits lateral position with respect to the lever can be adjusted withincertain limits, as shown in the drawings. The block C is preferablyshaped to coincide with the section of the groove of the said pulley soas to obtain the greatest eifective area of frictional contact. Onto theother end of the lever Ais pivoted a transversely-arranged trip-piece D,so constructed and arranged that while it will give way to the crank Ywhen itis rotating in a forward direction it will not give way when thecrank Y is rotating in a backward direction,.with the result that backpressure exerted on the said crank is transmitted, through thetrip-piece D, to the lever A in such a manner as to bring the brake-Specification of Letters Patent.

Application filed November 7, 1904. Serial No. 281,728.

Patented Nov. 14, 1905.

block G into contact with the driving-pulley Z, and thus produce abreaking effect. The trip-piece D may be restored to its ac- .tiveposition after displacement either by gravspring E to operate not onlyto retain the trip-piece in its operative position, but also to keep itnormally out of said position by suitably shaping the engaging faces ofthe trip-piece, as shown in the drawings.

The lever A is normally retained in such a position that the block C isout of frictional contact with the groove of the driving-pulley Z bymeans of a spring, such as F, operating between the forward end of thelever A and a clip, such as G, adapted to be attached to the frame ofthe cycle.

When this brake is intended to be sold as a complete component ready forapplication to any cycle, the bracket B is so constructed that it can beattached to any frame. This is effected by making the bracket in twoessential parts, the one a plate 6, adapted to be pivoted to the leverA, and the other a two-part block I), shaped to adapt them to encircleand embrace the particnlar section of tubular member X of the lower backfork of the cycle to which the brake is to be fitted. This block I) isclamped to the plate I) by means of two bolts 5 and a plate 6 whichenable the two parts of the block b to. be clamped both to the member Xof the frame and to the plate 6, by one operation. As the members of thelower back forks of cycles lie at varying angles, the twopart block b isso arranged that it can swivel on the plate 6 within certain limits, towhich end the lower part of the block engages the plate 6 by means of astud and hole, and the top of the block is cut away, as shown, to clearthe plate 6.

WhatI claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. A brake for motor-cycles comprising a bracket adapted to be clampedto one of the members of the lower back fork of the cycle, an L-shapedlever pivoted to said bracket, a shoe transversely adjustable on saidlever, a grooved driving-pulley on the driving-wheel of the cycle, afriction-block carried by said shoe and adapted to engage the ,s'roovein the driving-pulley, and a transversyv-arranged trip-piece carried bysaid lever and arranged to be engaged by one of the pedal-cranks of thecycle when the said crank is git en a backward rotation.

2. A brake for motor-cycles, comprising an L-shaped lever, a laterallyadjustable shoe mounted on one end of said lever, a frictionblockcarried by said shoe, a bracket to which said lever is pivoted, andwhich is adapted to be clamped to the frame of the cycle, a bracketadjustably mounted on the other end of said lever, atransversely-arranged trip-piece pivoted to said bracket, and a springfixed to said bracket and operating to retain said trip-piece both inits operative and inoperative positions, as set forth. a

3. A brake for motor-cycles, comprising an L-shaped lever, alaterallyadjustable shoe mounted on one end of said lever, africtionblock carried by said shoe, a swiveling bracket adapted to beclamped to the frame of the cycle to which said lever is pivoted, abracket adjustably mounted on the other end of said lever, atransversely-arranged trip-piece pivoted to said bracket, a spring fixedto said bracket and operating to retain the said trippiece both in itsoperative and inoperative positions, a clip adapted to be attached toone of the members of the frame of the cycle, and a spring connectingthe forward end of the lever with said clip so that it operates to keepthe brake in its inoperative position, as set forth.

In witness I have hereunto set my hand in the presence of two Witnesses.

WALTER H. COOKS.

Witnesses:

A. MILLWARD FLAoK, G. V. SYMEs.

